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From "Oleg Kalnichevski (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HTTPCLIENT-855) DNS Multiple A Support
Date Sun, 28 Jun 2009 13:16:47 GMT

     [ https://issues.apache.org/jira/browse/HTTPCLIENT-855?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Oleg Kalnichevski resolved HTTPCLIENT-855.
------------------------------------------

    Resolution: Won't Fix

HttpClient does not provide support for automatic multi-home fail-over on connect failures.
A simple fail-over mechanism can be implemented using a custom socket factory such as MultihomePlainSocketFactory
shipped with HttpClient 4.0.

http://hc.apache.org/httpcomponents-client/httpclient/xref/org/apache/http/conn/MultihomePlainSocketFactory.html

More complex fail-over scenarios that involve black listing of IP addresses should be implemented
on top of HttpClient 

Oleg

> DNS Multiple A Support
> ----------------------
>
>                 Key: HTTPCLIENT-855
>                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-855
>             Project: HttpComponents HttpClient
>          Issue Type: Question
>          Components: HttpClient
>    Affects Versions: 3.1 Final
>         Environment: Windows
>            Reporter: THIRION Yannick
>            Priority: Minor
>
> I didn't find any documentation on using DNS multiple A with httpclient.
> I set up a 2 IP DNS configuration and tried to perform an HTTPS request to this DNS address.
> It looks like httpclient does not try to walk through the IPs.
> When the first IP connection failed due to connection refused it retryies on the first
IP but didn't try to fallback to secondary IP.
> Is that the expected behavious?
> Note : I'm using a custom SSL  handler to support PKCS11 java keystore
> Is httpclient compliant with multiple A? If yes, is there any special settings?

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